I am looking into getting spare pads for my Shimano BR-RS785 brake calipers, what and I am wondering is what is the difference between the different pad compounds. I read a few articles online about it, but they seem to contradict each other

The two pads I was able to find online to replace my current ones are say
"Resin Brake Pad" and "Metal pad material"

https://www.bicyclesonline.com.au/sh...FQQHvAodwewAOA
wiggle.com.au | Shimano XTR BR-M985 Metal Pad With Cooling Fin | Disc Brake Pads